<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css_Flex布局.css">
</head>
<body>
    <h1>CSS：Flex布局属性</h1>
    <div class="box box1">
        <div>盒子一</div>
        <div>盒子二</div>
        <div>盒子三</div>
    </div>
    <!-- Flex容器属性 -->
    <div class="box box2">
        <div>盒子一</div>
        <div>盒子二</div>
        <div>盒子三</div>
    </div>
    <!-- Flex容器属性 -->
    <div class="box box3">
        <div>盒子一</div>
        <div>盒子二</div>
        <div>盒子三</div>
    </div>
</body>
</html>